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arm64: dump: no need to check return value of debugfs_create functions

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When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Will Deacon <will.deacon@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Peng Donglin <dolinux.peng@gmail.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Greg Kroah-Hartman 2019-01-22 15:41:11 +01:00 committed by Catalin Marinas
parent 0bd3ef34d2
commit e2a2e56e40
3 changed files with 7 additions and 13 deletions
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9
arch/arm64/include/asm/ptdump.h
View File

@ -34,13 +34,10 @@ struct ptdump_info {
void ptdump_walk_pgd(struct seq_file *s, struct ptdump_info *info);
#ifdef CONFIG_ARM64_PTDUMP_DEBUGFS
int ptdump_debugfs_register(struct ptdump_info *info, const char *name);
void ptdump_debugfs_register(struct ptdump_info *info, const char *name);
#else
static inline int ptdump_debugfs_register(struct ptdump_info *info,
const char *name)
{
return 0;
}
static inline void ptdump_debugfs_register(struct ptdump_info *info,
const char *name) { }
#endif
void ptdump_check_wx(void);
#endif /* CONFIG_ARM64_PTDUMP_CORE */

4
arch/arm64/mm/dump.c
View File

@ -407,7 +407,7 @@ void ptdump_check_wx(void)
static int ptdump_init(void)
{
ptdump_initialize();
return ptdump_debugfs_register(&kernel_ptdump_info,
"kernel_page_tables");
ptdump_debugfs_register(&kernel_ptdump_info, "kernel_page_tables");
return 0;
}
device_initcall(ptdump_init);

7
arch/arm64/mm/ptdump_debugfs.c
View File

@ -12,10 +12,7 @@ static int ptdump_show(struct seq_file *m, void *v)
}
DEFINE_SHOW_ATTRIBUTE(ptdump);
int ptdump_debugfs_register(struct ptdump_info *info, const char *name)
void ptdump_debugfs_register(struct ptdump_info *info, const char *name)
{
struct dentry *pe;
pe = debugfs_create_file(name, 0400, NULL, info, &ptdump_fops);
return pe ? 0 : -ENOMEM;
debugfs_create_file(name, 0400, NULL, info, &ptdump_fops);
}